CHAS. LENTZ & SONS 
CDe Professional Biologist's and 
Patbolosist's microscope 
CCS. SPECIALLY ADAPTED FOR PHOTO-MICROGRAPHY 
This microscope has large stage and base and has plenty of working distance 
between stage and arm — important in photographing; with low power 
objectives. We regard the CCS as an eminently practical and desirable 
microscope for individual use, as it is adapted, to the most difficult work. 
Although we now supply this stand with the new substage and other im- 
provements, the price has been materially reduced. The New Revolving 
Mechanical Stage is readily substituted for the plain revolving stage. To effect 
the change it is only necessary to loosen the two centering screws and lift out the 
plain stage, substituting the other for it. We recommend the purchase of both 
stages wherever possible, as one is often required where the other is not at all 
suitable. The stand is of brass throughout, finely polished and lacquered. The 
base is of special horseshoe form, having the back claw extended to form a tripod 
support. The pillar is rectangular, extremely rigid, and the joint has clamping 
lock for securing the body at any desired angle. The substage is the New Com- 
plete Substage, as described on pages i8 and 19. The stage is revolving, has 
centering screws, and the surface is a plain hard rubber plate, which is vulcanized 
into the metal support (patented) in such a manner that is impossible for any warp- 
ing or separation to take place. It has a very large aperture so that large 
sections (such as medulla) can be examined, projected or photographed with a 
low power objective, and the whole section be in the field* The revolving and 
^entering stage of this stand allows of the revolving of diatomes, etc., and their 
thorough examination under different conditions of light, also of the manipula- 
tion of the object for photo-micrography and for the most difficult search 
work. The complete substage, with its racking out and revolving diaphragm, 
allows of extremely oblique illumination of the object from any meridian. The fine 
adjustment is by accurate micrometer screw acting on the triangular bearing of 
the arm, the construction being a new (patented) device whereby all set-screws and 
springs are discarded which, when employed, relax and wear so as to produce 
lateral motion or movement of the field, an extremely annoying and serious 
defect. The coarse adjustment is by diagonal rack and pinion of the utmost 
delicacy and precision, enabling the one-sixth inch objective to be easily focused 
with it alone. The main tube has nickeled and graduated draw tube working in 
cloth-lined sleeve. The Abbe condenser 1.20 N. A., is a part of this stand. 
Each CCS Microscope is furnished in a polished case with nickeled handle 
and lock and with receptacles for accessories. 
CCSl. Stand CCS with i eyepiece, i inch and I inch objectives $90 OO 
CCS2. CCS I with double revolving nosepiece 05 OO 
CCS3. Stand CCS with two eyepieces, | inch and I inch objectives 92 OO 
CCS4. CCS3 and double revolving nosepiece 97 OO 
CCS7. Stand CCS with 2 eyepieces, f inch and J inch dry, and ^.y inch oil 
immersion objectives 130 OO 
CCS8. CCS7 and triple revolving nosepiece 137 50 
Price of Mechanical Stage for CCS Microscope, extra 35 OO 
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